How many Joules of heat are required to melt 250 grams of ice at 0°C? AHfus = 334 J/g
AHvap = 2258 J/g
Cp= 4.184 J/g C

What best discribes the relationship between wavelength and frequency in a electromagnetic wave

How do you know when a chemical reaction has occurred

Using this reversible reaction, answer the questions below: n2o4 2no2 (colorless) (reddish-brown) -as the temperature increased, what happened to the n2o4 concentration? -was the formation of reactants or products favored by the addition of heat? -which reaction is exothermic? right to left or left to right? -if the change of enthalpy of this reaction when proceeding left to right is 14 kcal, which chemical equation is correct? n2o4 2no2 + 14 kcal n2o4 2no2, hr = +14 kcal n2o4 + 14 kcal 2no2 n2o4 2no2, hr = -14 kcal